RANKING · 2020 CENSUS · 101 SHOWN OF 101

Highest Welsh population share, Illinois counties · 2020

Illinois counties ranked by the share of all residents who are Welsh ancestry (2020 American Community Survey). A concentration measure: Welsh residents as a percentage of total population. This list covers the 101 counties in Illinois that qualify, ranked against each other statewide. The median across all 101 is 0.6%.

Welsh Americans: full group profile →

IllinoisAll states All rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPWELSH SHAREVS 2010

01Piatt County, ILIL16,7911.4%+0.9 pts

02Saline County, ILIL22,7721.2%0.0 pts

03Bond County, ILIL16,9591.2%+0.4 pts

04Montgomery County, ILIL28,0761.2%+0.9 pts

05Perry County, ILIL20,1601.1%+0.2 pts

06Hamilton County, ILIL7,8591.1%+1.1 pts

07Henderson County, ILIL5,9841.1%+0.8 pts

08Iroquois County, ILIL26,1501.0%+0.5 pts

09Coles County, ILIL46,6071.0%+0.5 pts

10Franklin County, ILIL36,9160.9%+0.3 pts

11Warren County, ILIL16,2220.9%+0.3 pts

12Macon County, ILIL99,3000.9%+0.4 pts

13Jo Daviess County, ILIL21,5940.9%+0.1 pts

14Bureau County, ILIL32,5100.8%+0.4 pts

15Williamson County, ILIL67,2250.8%+0.1 pts

16Mason County, ILIL12,4110.8%+0.7 pts

17Woodford County, ILIL38,1110.8%+0.2 pts

18Fulton County, ILIL32,9010.8%−0.1 pts

19Marshall County, ILIL11,4730.8%−0.1 pts

20Clark County, ILIL15,1140.8%0.0 pts

21Morgan County, ILIL32,5150.8%+0.5 pts

22Peoria County, ILIL178,5530.8%+0.1 pts

23Richland County, ILIL15,2190.8%+0.5 pts

24Menard County, ILIL11,8630.8%+0.2 pts

25Jackson County, ILIL52,5010.8%+0.3 pts

26Logan County, ILIL27,1820.7%+0.1 pts

27Gallatin County, ILIL4,6160.7%+0.3 pts

28Tazewell County, ILIL130,0490.7%+0.3 pts

29Sangamon County, ILIL194,1700.7%−0.1 pts

30Clay County, ILIL12,7930.7%+0.3 pts

31Madison County, ILIL263,1100.7%0.0 pts

32Rock Island County, ILIL141,8690.7%+0.2 pts

33Hardin County, ILIL3,5880.6%−0.4 pts

34Washington County, ILIL13,5640.6%−1.2 pts

35Henry County, ILIL48,0950.6%0.0 pts

36Boone County, ILIL53,5680.6%+0.1 pts

37Moultrie County, ILIL14,3710.6%+0.1 pts

38White County, ILIL13,2500.6%−0.1 pts

39Douglas County, ILIL19,8800.6%+0.1 pts

40Stephenson County, ILIL43,2200.6%+0.2 pts

41Vermilion County, ILIL71,2590.6%−0.2 pts

42Lawrence County, ILIL13,7900.6%+0.3 pts

43Edwards County, ILIL5,8980.6%−0.3 pts

44Champaign County, ILIL209,9720.6%0.0 pts

45Hancock County, ILIL16,8030.6%0.0 pts

46Mercer County, ILIL15,2290.6%−0.2 pts

47Jefferson County, ILIL36,1470.6%+0.1 pts

48Adams County, ILIL64,2670.6%+0.2 pts

49McLean County, ILIL171,4190.6%−0.2 pts

50Schuyler County, ILIL6,6570.6%+0.2 pts

51Pope County, ILIL3,6720.6%0.0 pts

52St. Clair County, ILIL250,7080.5%0.0 pts

53Randolph County, ILIL29,9210.5%+0.2 pts

54Kankakee County, ILIL105,5250.5%0.0 pts

55Jasper County, ILIL9,0320.5%−0.4 pts

56Union County, ILIL16,6560.5%−0.2 pts

57Putnam County, ILIL5,6190.5%−0.1 pts

58Alexander County, ILIL4,5700.5%+0.2 pts

59DeKalb County, ILIL101,8350.5%0.0 pts

60Macoupin County, ILIL43,7480.5%−0.1 pts

61Monroe County, ILIL34,8400.5%+0.1 pts

62Kendall County, ILIL145,4700.5%−0.2 pts

63Winnebago County, ILIL283,6740.5%0.0 pts

64Knox County, ILIL47,7670.5%−0.2 pts

65Christian County, ILIL33,4430.4%+0.1 pts

66Pulaski County, ILIL4,8200.4%+0.4 pts

67McHenry County, ILIL317,7510.4%−0.1 pts

68Crawford County, ILIL18,6480.4%−0.4 pts

69Ford County, ILIL13,2160.4%+0.2 pts

70Effingham County, ILIL34,5190.4%+0.1 pts

71Ogle County, ILIL51,3990.4%+0.1 pts

72DuPage County, ILIL934,2980.4%−0.1 pts

73Wayne County, ILIL15,8820.3%+0.2 pts

74Wabash County, ILIL10,9070.3%0.0 pts

75Brown County, ILIL6,4010.3%–

76LaSalle County, ILIL107,7730.3%−0.2 pts

77Whiteside County, ILIL54,1210.3%+0.1 pts

78Will County, ILIL712,2530.3%0.0 pts

79Marion County, ILIL36,3820.3%−0.5 pts

80Kane County, ILIL525,7570.3%−0.2 pts

81Lake County, ILIL719,3390.3%−0.1 pts

82Johnson County, ILIL13,3630.3%+0.1 pts

83Lee County, ILIL32,9140.3%−0.1 pts

84Carroll County, ILIL15,4190.3%−0.1 pts

85Shelby County, ILIL20,5760.3%−0.1 pts

86Stark County, ILIL5,3190.3%−0.7 pts

87Livingston County, ILIL35,0570.3%−0.2 pts

88McDonough County, ILIL25,9160.3%−0.5 pts

89Jersey County, ILIL21,1600.3%0.0 pts

90De Witt County, ILIL15,1180.3%−0.4 pts

91Grundy County, ILIL54,0520.3%−0.7 pts

92Cumberland County, ILIL10,2080.3%−0.7 pts

93Cook County, ILIL5,194,6250.2%0.0 pts

94Fayette County, ILIL20,7900.2%−0.2 pts

95Cass County, ILIL12,4630.2%0.0 pts

96Edgar County, ILIL16,3230.2%−0.1 pts

97Clinton County, ILIL37,1280.2%−0.1 pts

98Greene County, ILIL11,3130.2%−0.8 pts

99Scott County, ILIL4,8660.1%−0.7 pts

100Calhoun County, ILIL4,3000.1%0.0 pts

101Pike County, ILIL14,2310.1%−0.6 pts

SHOWING 1–101 OF 101

Download CSV (full list, 101 rows)

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS